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© 2020 Carrier
4. MOUNTING OF THE IGNITION DEVICE
4.1 The igniter function of HDHESI is activated by connecting the power pack to a power supply (230 or 115
VAC). So, before it is connected, check the supply voltage (230VAC or 115VAC) and check the connections
on transformer terminals. It should be wired following order spec. to 230VAC or 115 VAC. If they do not
match, change transformer supply wiring following wiring diagram Fig. 4 and Fig. 8.
4.2 The power supply should be connected in accordance with the igniter's schematic diagram of the power pack
board and igniter wiring diagram for power pack and rod (see Fig. 4), with particular attention to the correct
grounding to the plant grounding system, following the local codes.
4.3 Igniter must always be used in accordance with its intended purpose and following approved installation
documentation, operation algorithms and procedures as well as service manuals.
4.4
Check environmental conditions and ensure that the specified operating temperatures of components as in
p. 3 will not be exceeded
.
4.5 During the rod mounting and aiming the conditions and recommendations mentioned in p. 2 should be observed
(see also below).
4.6 Rod should be mounted in a guide tube of diameter not less than 1” and a retraction for the
HDHESI
rod should
be used to retract igniter rod tip to the safe place after Trial for Ignition (please refer to
SF-2001
High Energy
Igniter technical bulletin). The tube must allow the rod tip to reach the correct position in primary combustion
zone to ignite the fuel-air mixture and ensure correct operating temperature and tip protection (please follow
recommendations in p. 2 and Fig. 3).
When
HDHESI
ignition rod is being used in high temperature applications:
-
always use retractor with min. stroke 400 mm to pull the tip back inside the guide tube,
-
increase the guide tube length so that the rod tip is completely hidden in guide tube when
retracted,
-
use purging / cooling air in the tube to cool the rod and push away a dirt.
4.7 Mounting of the igniter in a retractor: the igniter's rod should be placed inside the guide pipe and fixed in the
retractor clamps. Mounting of the igniter in a retractor must be done so as to enable adjustment of the rod tip
position relative to the burner's nozzle. See retractor Instruction Manual
SF-2001
and burner manufacturer
recommendations.
4.8 The guide tube should not be placed in the flame.
4.9 The power pack enclosure should be positioned as close to the burner as possible to reduce cable lengths, as
energy is lost with increasing cable length. The control box must be in a location where the temperature does not
exceed at any moment its max. operating temperature. The box should be mounted with cable glands at the
bottom, to reduce moisture as well as dust and dirt ingress.
4.10Choose the correct glands depending on the cable type and environment demands. After installation, check if the
glands are correctly tightened.
4.11The HV cable should be placed away from any hot elements. It is shielded but not armored, so it should be
mounted in conduits, tubes or cable trays in order to reduce the possibility of damage.
NOTICE
: CHECK IF THE LOCAL REGULATIONS ALLOW FOR DIRECT IGNITION OF PARTICULAR
BURNER TYPE OF A SPECIFIED TYPE OF FUEL AT A REQUIRED CAPACITY LEVEL USING AN ELECTRIC
SPARK IGNITER
NOTICE
:
ONLY QUALIFIED AND COMPETENT PERSONS AUTHORISED BY THE PLANT
MANAGEMENT OR MANUFACTURER, ACCORDING TO LOCAL LAW, ARE PERMITTED TO INSTALL,
MAINTAIN AND SERVICE HDHESI IGNITERS
NOTICE
: MAKE SURE TO CONSULT THE MANNER OF MOUNTING THE IGNITER WITH THE
PRODUCT MANUFACTURER / DISTRIBUTOR
